High-Voltage Hydrogen Pipeline and Valve Detection System and Method

Abstract

This application belongs to the technical field of pipeline detection, and particularly relates to a high-pressure hydrogen pipeline and valve detection system and a high-pressure hydrogen pipeline and valve detection method. The method includes: determining the detection object of the high-pressure hydrogen pipeline and valve detection system according to the type of the test process, and setting a detection environment in the location area where the detection object is located, where the detection environment is used to make the detection object in the environment where the test process is located; obtaining the connection components that have a connection relationship with the detection object in the high-pressure hydrogen pipeline and valve detection system, and controlling the working state of the connection components; obtaining the status value of the high-pressure hydrogen pipeline and valve detection system, and determining the detection result for the detection object based on the comparison result between the status value and the preset status value. This application is used to improve the detection efficiency of pipelines and valves.

Description

Technical Field

[0001] This application belongs to the technical field of performance detection of high-pressure hydrogen pipelines and valves, and specifically relates to a detection system and method for high-pressure pipeline valves. Background Art

[0002] Due to the characteristics of high-pressure hydrogen being explosive and prone to leakage, the materials of the pipelines and control valves used for transportation and distribution should have the properties of being resistant to high and low temperatures and not leaking under high pressure.

[0003] High-pressure hydrogen pipelines and control valves, as the basic component structures of hydrogen energy equipment or facilities, their reliability directly affects the service life and safety of hydrogen energy equipment or facilities. Before being put into use, by constructing a detection system, the reliability of hydrogen pipelines and control valves under extreme environments is tested and recognized in the domestic and international application markets.

[0004] During the test, the hydrogen pipeline and control valve to be detected are connected to the detection system, and continuous cyclic impacts are applied to the hydrogen pipeline and control valve to test the durability of the hydrogen pipeline and control valve. The current common detection systems are large and the test process is cumbersome, which to a certain extent affects the efficiency and cost of testing hydrogen pipelines and control valves. Summary of the Invention

[0005] The purpose of this application is to provide a detection system and method for high-pressure hydrogen pipelines and valves, which are used to improve the detection efficiency of pipelines and valves and reduce the detection cost.

[0006] This application provides a detection system for high-pressure hydrogen pipelines and valves, including:

[0007] A detection unit, the detection unit includes a plurality of detection components, and the detection system for high-pressure hydrogen pipelines and valves is used to select one detection component or a combination of multiple detection components as the detection object of the test process according to the type of the test process;

[0008] A control unit, the control unit is electrically connected to the detection unit, and a sensor component is arranged between the control unit and the detection unit. The sensor component is used to obtain the test parameters of the detection unit and judge the working state of the detection unit according to the test parameters;

[0009] A driving unit, one end of the driving unit is electrically connected to the control unit, and the other end of the driving unit is connected to the detection unit through the driving unit, and is used to adjust the working state of the driving component according to the control instruction of the control unit to implement the corresponding test process.

[0010] This application provides a detection method for high-pressure hydrogen pipelines and valves, including:

[0011] Determine the detection object of the high-pressure hydrogen pipeline and valve detection system according to the type of the test process, and set a detection environment in the location area where the detection object is located. The detection environment is used to make the detection object in the environment where the test process is located;

[0012] Obtain the connection components that have a connection relationship with the detection object in the high-pressure hydrogen pipeline and valve detection system, and control the working state of the connection components;

[0013] Obtain the status value of the high-pressure hydrogen pipeline and valve detection system, and determine the detection result for the detection object based on the comparison result between the status value and the preset status value.

[0014] In this application, the high-pressure hydrogen pipeline and valve detection system includes a detection unit, a control unit, and a driving unit; the detection unit includes multiple detection components, and one detection component or a combination of multiple detection components can be selected as the detection object of the test process according to the type of the test process; the control unit is electrically connected to the detection unit, and a sensor component is arranged between the control unit and the detection unit. The sensor component is used to obtain the test parameters of the detection unit, judge the status of the detection unit according to the test parameters, so as to obtain the detection result for the detection unit; the driving unit is used to implement the detection process of the detection unit. One end of the driving unit is connected to the detection unit, and is used to adjust the working state of the driving component according to the control instruction to implement the corresponding test process. In addition, the high-pressure hydrogen pipeline and valve detection method provided in this application can be applied to the high-pressure hydrogen pipeline and valve detection system. Determine the detection object of the high-pressure hydrogen pipeline and valve detection system according to the type of the test process, set a detection environment in the location area where the detection object is located, obtain and control the connection components that have a connection relationship with the detection object in the high-pressure hydrogen pipeline and valve detection system, so as to obtain the status value of the high-pressure hydrogen pipeline and valve detection system. When the working state of the connection component changes, the internal state in the high-pressure hydrogen pipeline and valve detection system will also change accordingly. Thus, the status value of the high-pressure hydrogen pipeline and valve detection system is obtained, and the detection result for the detection object is determined based on the comparison result between the status value and the preset status value. This application can select a part of the high-pressure hydrogen pipeline and valve detection system as the detection object according to the type of the test process, and control the working state of the connection components that have a connection relationship with the detection object to realize the test process for the detection object.

[0015] Other features and advantages of this application will become apparent through the following detailed description, or will be partially learned through the practice of this application.

[0016] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit this application. Brief Description of the Drawings

[0017] The drawings herein are incorporated into and constitute a part of this specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application. Obviously, the drawings in the following description are only some embodiments of the present application, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts.

[0018] Figure 1 A schematic structural diagram of a high-pressure hydrogen pipeline and valve detection system provided by this embodiment is shown.

[0019] Figure 2 A schematic structural diagram of a high-pressure hydrogen pipeline and valve detection system provided by this embodiment is shown.

[0020] Figure 3 A schematic flowchart of a method for detecting a high-pressure hydrogen pipeline and valve proposed by an embodiment of the present application is shown.

[0021] Figure 4 A schematic control flowchart for durability testing when the detection object is a control valve is shown.

[0022] Figure 5 A schematic control flowchart for durability testing when the detection object is a test pipeline is shown.

[0023] Figure 6 A schematic flowchart for pressure resistance testing when the detection object is a test pipeline is shown.

[0024] Figure 7 A schematic flowchart for valve leakage detection when the detection object is a control valve is shown.

[0025] Figure 8 A schematic flowchart for resetting the high-pressure hydrogen pipeline and valve detection system is shown. Detailed Embodiments

[0026] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be more complete and comprehensive, and will fully convey the concept of the example embodiments to those skilled in the art.

[0027] In addition, the described features, structures, or characteristics may be combined in one or more embodiments in any suitable manner. In the following description, numerous specific details are provided to give a thorough understanding of the embodiments of the present application. However, those skilled in the art will realize that the technical solutions of the present application may be practiced without one or more of the specific details, or other methods, components, devices, steps, etc. may be adopted. In other cases, well-known methods, devices, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the present application.

[0028] The block diagrams shown in the drawings are only functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities may be implemented in software form, or implemented in one or more hardware modules or integrated circuits, or implemented in different networks and / or processor devices and / or microcontroller devices.

[0029] The flowcharts shown in the drawings are only illustrative and not necessarily include all the contents and operations / steps, nor are they necessarily executed in the described order. For example, some operations / steps can be decomposed, while some operations / steps can be combined or partially combined, so the actual execution order may change according to the actual situation.

[0030] As an alternative implementation, the application scenarios of the high-pressure hydrogen pipeline and valve detection system and the high-pressure hydrogen pipeline and valve detection method provided in this embodiment are related to hydrogen.

[0031] In the prior art, hydrogen pipelines and control valves, as the basic materials of hydrogen energy equipment and facilities, their reliability directly affects the equipment life and use safety.

[0032] To detect the reliability of hydrogen energy equipment and facilities, hydrogen pipelines and control valves are used as structures in the detection system. Multiple extreme detection environments are set up, and hydrogen materials are used to impact the hydrogen pipelines and control valves.

[0033] In the detection system, the hydrogen pipeline and the control valve are connected to the detection pipeline, and a booster compressor, a hydrogen storage bottle group, a recovery bottle group, and a recovery compressor are connected. The service life of the above-mentioned equipment will be affected during the impact process, resulting in too high depreciation costs during the detection process.

[0034] In this embodiment, the hydrogen pipeline and the control valve are connected in a closed space, and by controlling the air pressure in the closed space, the pressure of hydrogen on the hydrogen pipeline and the control valve is adjusted to complete the test process. The detection process has low costs and reduces the depreciation costs during the detection process to a certain extent.

[0035] In this embodiment, the test pipeline is the hydrogen pipeline for transporting hydrogen.

[0036] Figure 1 Shows a schematic structural diagram of the high-pressure hydrogen pipeline and valve detection system provided in this embodiment. As Figure 1 shown, an embodiment of the present application provides a high-pressure hydrogen pipeline and valve detection system, including:

[0037] A detection unit, the detection unit includes a plurality of detection components, and the high-pressure hydrogen pipeline and valve detection system is used to select one detection component or a combination of multiple detection components as the detection object of the test process according to the type of the test process;

[0038] A control unit, the control unit is electrically connected to the detection unit, a sensor component is arranged between the control unit and the detection unit, the sensor component is used to obtain the test parameters of the detection unit, and the control unit is used to issue a control instruction and obtain the detection result of the detection unit;

[0039] A driving unit, one end of the driving unit is electrically connected to the control unit, and the other end of the driving unit is connected to the detection unit through the driving unit, and is used to adjust the working state of the driving component according to the control instruction of the control unit to implement the corresponding test process.

[0040] Specifically, the high-pressure hydrogen pipeline and valve detection system is a system for detecting pipelines and valves. The pipeline can be a pipeline for transporting hydrogen, and the valve is arranged between the gas chamber and the pipeline to block or transport hydrogen.

[0041] Furthermore, the high-pressure hydrogen pipeline and valve are detected by inputting high-pressure hydrogen into the high-pressure hydrogen pipeline and valve detection system.

[0042] In this embodiment, the high-pressure hydrogen pipeline and valve detection system includes a detection unit, a control unit and a driving unit.

[0043] The detection unit is the detection object of the test process. During the test process, by controlling the working state of the connection components in the control unit and the driving unit, the state of the detection unit when the working states of other components change is tested.

[0044] One end of the control unit is connected to the detection unit, the state value of the detection unit is obtained through the sensor component arranged between the control unit and the detection unit, the other end of the control unit is connected to the driving unit, and is used to send a control instruction to the driving unit, thereby changing the state of the driving component in the control unit, realizing the change of the working environment where the detection unit is located, and realizing the test of the detection object.

[0045] Furthermore, the detection components of the detection unit include a test pipeline and a control valve;

[0046] According to the type of the test process, selecting one detection component or a combination of multiple detection components as the detection object of the test process includes:

[0047] When the test process is to detect the test pipeline, select the test pipeline as the detection object;

[0048] When the test process is to detect the control valve, select the control valve as the detection object;

[0049] When the test process is to detect the control valve and the test pipeline, combine the control valve and the test pipeline and use them as the detection object.

[0050] Furthermore, as an optional implementation manner, the detection components of the detection unit include a test pipeline and a control valve.

[0051] Among them, the number of the test pipeline and the control valve can be set according to actual needs, and the test pipeline is connected to the control valve.

[0052] Moreover, the test pipeline and the control valve can be separately selected as the detection object. For example, when the test pipeline is selected as the detection object, the control valve is a non-detection object; when the control valve is selected as the detection object, the test pipeline is a non-detection object; or the test pipeline and the control valve can be combined into a whole and the whole is used as the detection object.

[0053] The test pipeline is arranged between the control valve and the control unit, and a connection valve is arranged at the connection between the test pipeline and the control unit.

[0054] Furthermore, the test pipeline is arranged between the control valve and the control unit, and a connection valve is arranged at the connection between the test pipeline and the control unit.

[0055] The connection valve is connected to the sensor assembly, and the sensor assembly can be a pressure sensor for detecting whether there is gas leakage at the connection valve.

[0056] If the gas filled in the test pipeline is hydrogen, the connection valve set here can be used to detect whether hydrogen leakage has occurred at the test pipeline.

[0057] The driving unit includes a driving device and a cylinder assembly;

[0058] The driving device is connected to the piston inside the cylinder assembly and is used to move the piston according to the control instruction of the control unit;

[0059] The first end of the cylinder assembly is connected to the detection unit through the first driving part, and the second end of the cylinder part is connected to the detection unit through the second driving part;

[0060] Furthermore, the first driving part includes a first valve and a first pipeline; the first valve is connected to the first pipeline, and the first pipeline is connected to the detection component;

[0061] The second driving part includes a second valve and a second pipeline; the second valve is connected to the second pipeline, and the second pipeline is connected to the detection component.

[0062] Specifically, the driving part includes a driving device and a cylinder assembly. The cylinder assembly consists of a piston, a pull rod, and an air chamber. The pull rod is connected between the piston and the driving device. The driving device can adjust the length of the pull rod to push the piston, thereby affecting the air pressure in the air chamber.

[0063] Only a small amount of hydrogen needs to be input into the cylinder assembly, and the hydrogen pressure therein is adjusted through the cylinder assembly.

[0064] Therefore, only a small amount of hydrogen needs to be input to detect the high-pressure resistance performance and leakage performance of the pipeline.

[0065] The first end of the cylinder assembly is connected to the detection part through the first driving part. Specifically, the first driving part is connected to the control valve in the detection part.

[0066] The first driving part includes a first valve and a first pipeline. Among them, the first valve is connected to the cylinder assembly. When the piston squeezes the air chamber, the pressurized gas flows from the outlet of the cylinder assembly to the first valve. The first valve is connected to the first end of the first pipeline, and the second end of the first pipeline is connected to the control valve in the detection component.

[0067] That is, if the first valve is in the open state, at this time, the gas in the air chamber is squeezed, and the gas is pushed into the first valve and flows to the connection between the first pipeline and the control valve.

[0068] In addition, the second end of the cylinder assembly is connected to the detection part through the second driving part. Specifically, the second driving part is connected to the detection pipeline in the detection part.

[0069] The second driving part includes a second valve and a second pipeline. The second valve is connected to the cylinder assembly, the other end of the second valve is connected to the second pipeline, and the second pipeline is connected to the test pipeline.

[0070] As an alternative embodiment, Figure 2 The structural schematic diagram of the high-pressure hydrogen pipeline and valve detection system provided by this embodiment is shown.

[0071] It should be noted that the number of test pipelines and the number of control valves in this embodiment are only for illustration and do not limit the technical solutions of the embodiments of the present application.

[0072] Such as Figure 2 As shown, the detection part includes two control valves and a test pipeline with two channel openings. Each channel opening of the test pipeline is respectively connected to the control valve.

[0073] A connection valve and a sensor assembly are provided at the connection between the test pipeline and the control unit. One end of the sensor assembly is connected to the control unit, and the other end of the sensor assembly is connected to the connection valve.

[0074] The driving unit includes a driving device and a cylinder assembly connected to the driving device. The piston in the cylinder assembly is connected to the driving device through a pull rod, and the first valve and the second valve are respectively connected to the air chamber outlets in the cylinder assembly. When the piston is pushed, the gas is squeezed to the air chamber outlets, and the gas in the cylinder flows through the value detection unit through the first valve or the second valve.

[0075] According to Figure 2 , the first valve is connected to the first pipeline, and the two channel ports of the first pipeline are respectively connected to the control valve. The second valve is connected to the second pipeline, and the outlet of the second pipeline is connected between the test pipeline A and the control valve.

[0076] The high-pressure hydrogen pipeline and valve detection system and the high-pressure hydrogen pipeline and valve detection method proposed in the embodiments of the present application can be used in the component detection scenarios of hydrogen-related equipment.

[0077] Due to the small molecular weight of hydrogen, high-pressure hydrogen is prone to leakage. The reliability requirements for the control valves and transmission pipelines in related equipment are relatively high. The technical solution proposed in this embodiment is used to detect the performance of the control valves and hydrogen pipelines to reduce the use cost in the actual scenario.

[0078] Figure 3 The flowchart of a high-pressure hydrogen pipeline and valve detection method proposed in the embodiments of the present application is shown. As Figure 3 shown, the method includes:

[0079] S310, according to the type of the test process, determine the detection object of the high-pressure hydrogen pipeline and valve detection system, and set a detection environment in the location area where the detection object is located. The detection environment is used to make the detection object in the environment where the test process is located.

[0080] Specifically, according to the type of the test process, determine the detection object of the high-pressure hydrogen pipeline and valve detection system to set a detection environment in the location area where the detection object is located. The detection environment can make the environment where the detection object is located meet the environmental requirements required by the test process.

[0081] For example, the detection environment can be adjusted to high temperature, normal temperature or low temperature according to the requirements of the test process.

[0082] S320, obtain the connection components having a connection relationship with the detection object in the high-pressure hydrogen pipeline and valve detection system, and control the working state of the connection components.

[0083] Specifically, obtain the connection components of the high-pressure hydrogen pipeline and valve detection system that have a connection relationship with the detection object, and adjust the working state of the connection components.

[0084] Furthermore, during the process of controlling the working state of the connection components, the state parameters of the high-pressure hydrogen pipeline and valve detection system can be detected.

[0085] If the state parameters of the current high-pressure hydrogen pipeline and valve detection system meet the preset conditions, then another control strategy is adopted to control the connection components.

[0086] Exemplarily, in the first stage, the first control strategy is adopted to control the working state of the connection components. If the state parameters of the current high-pressure hydrogen pipeline and valve detection system meet the preset conditions, then the second control strategy is adopted to control the working state of the connection components.

[0087] It should be noted that the difference between the first control strategy and the second control strategy can be the difference in the connection components or the difference in the states of the connection components.

[0088] The first control strategy only controls connection component 1, and the second control strategy only controls connection component 2; or the first control strategy controls the connection component to open, and the second control strategy controls the connection component to close.

[0089] As an optional implementation method, different control strategies can be adopted to control the connection components in different test processes, so as to be able to implement different types of test processes, and thus obtain the detection results of the detection object for different indicators.

[0090] S330, obtain the state value of the high-pressure hydrogen pipeline and valve detection system, and determine the detection result for the detection object based on the comparison result between the state value and the preset state value.

[0091] Specifically, during the process of controlling the working state of the connection components, obtain the state value of the high-pressure hydrogen pipeline and valve detection system, compare the state value with the preset state value to obtain a comparison result, and thus determine the detection result for the detection object.

[0092] In this embodiment, by determining the detection object of the high-pressure hydrogen pipeline and valve detection system according to the type of the test process, and setting the detection environment at the location area where the detection object is located, adjusting the parameters of the detection environment can make the detection object in the required environment, and can test the performance of the detection object under different environments, obtaining more accurate detection results. At the same time, by obtaining the connection components in the high-pressure hydrogen pipeline and valve detection system that have a connection relationship with the detection object, and controlling the working state of the connection components. Further, a variety of control strategies are used to control the working state of the connection components so that the detection object works under preset conditions. By obtaining the status value of the high-pressure hydrogen pipeline and valve detection system to determine the detection result for the detection object. The high-pressure hydrogen pipeline and valve detection method provided in this embodiment is applied to the high-pressure hydrogen pipeline and valve detection system. Through the type of the test process, it can detect different types of detection objects. At the same time, by controlling the working state of the connection components that have a connection relationship with the detection object, and further dynamically adjusting the working state of the connection components according to the current state of the high-pressure hydrogen pipeline and valve detection system, the detection process is simple, the amount of hydrogen used as the input for detection purposes is small, and the detection can be carried out quickly, improving the efficiency of detecting pipeline valves.

[0093] Further, according to the type of the test process, determine the detection object of the high-pressure hydrogen pipeline and valve detection system, and set the detection environment in the area where the detection object is located, including:

[0094] According to the type of the test process, determine the test index of the test process and the detection object targeted by the test index;

[0095] Determine the location area where the detection object is located, and based on the test index, set the environmental parameters of the detection environment where the detection object is located.

[0096] Specifically, the type of the test process includes but is not limited to the temperature test of the detection object.

[0097] When high-temperature detection of the detection object is required, set the detection environment to high temperature; when low-temperature detection of the detection object is required, set the detection environment to low temperature; when normal-temperature detection is carried out, set the detection environment to normal temperature.

[0098] Further, obtain the connection components in the high-pressure hydrogen pipeline and valve detection system that have a connection relationship with the detection object, and control the working state of the connection components, including:

[0099] Obtain the connection components of the detection object in the high-pressure hydrogen pipeline and valve detection system;

[0100] According to the component type of the connection component and the type of the test process, determine the control operation for the connection component.

[0101] Specifically, the high-pressure hydrogen pipeline and valve detection method provided in this embodiment is applied to a high-pressure hydrogen pipeline and valve detection system. Taking the structure of the high-pressure hydrogen pipeline and valve detection system provided in the above embodiment as an example, the detection object is one of the test pipeline or the control valve, or a combination of the test pipeline and the control valve.

[0102] When only one of them is selected as the detection object, the other parts are all regarded as a part of the high-pressure hydrogen pipeline and valve detection system. At the same time, the connection components having a connection relationship with the detection object are obtained, and the control operations for the connection components are determined.

[0103] Further, the types of the test process include endurance detection; the connection components having a connection relationship with the detection object in the high-pressure hydrogen pipeline and valve detection system are obtained, and the working states of the connection components are controlled, including:

[0104] When the type of the test process is endurance detection, the connection components having a connection relationship with the detection object in the high-pressure hydrogen pipeline and valve detection system are obtained;

[0105] The number of cycles is set, and the process of controlling the working states of the connection components is cyclically executed according to the number of cycles.

[0106] Specifically, the test process includes endurance detection, including the endurance detection of the test pipeline and the endurance detection of the control valve.

[0107] As an optional implementation manner, the test process further includes a pressure resistance test of the test pipeline.

[0108] In the endurance detection, the number of cycles represents the number of times the detection component can withstand impacts, and the connection components mainly include the working states of each component in the driving part having a connection relationship with the detection object.

[0109] The process of controlling the working states of the connection components is cyclically executed by setting the number of times.

[0110] Taking Figure 2 the structural schematic diagram of the high-pressure hydrogen pipeline and valve detection system shown as an example, the test process provided in the following embodiments is described.

[0111] As an optional implementation manner, Figure 4 the schematic diagram of the control flow for endurance detection when the detection object is the control valve is shown.

[0112] Set the number of cycles n1 = 0;

[0113] The control unit controls the control valve K1, the control valve K2, and the second valve K4 to be closed, and the first valve K3 to be opened;

[0114] The control unit sends a control instruction to the drive unit, and the drive unit drives the piston of the cylinder assembly to increase the pressure in the air chamber;

[0115] When the air pressure is greater than the air pressure threshold, control the first valve K3 to close;

[0116] Control the second valve K4 to open. After controlling the piston to reset, control the second valve K4 to close;

[0117] The control unit reads the pressure value P12 of the sensor assembly P1 and the pressure value P22 of the sensor assembly P2;

[0118] After a preset time, the control unit reads the pressure value P13 of the sensor assembly P1 and the pressure value P23 of the sensor assembly P2;

[0119] Compare the two pressure values. If P22 = P23, it means that the detection result of the current detection process is normal, and the loop count n1 = n1 + 1. If the loop count is greater than or equal to the maximum impact count Nset, then the detection result is normal and the loop count is obtained; if the loop count is less than the maximum impact count Nset, then loop the above process.

[0120] If P22 > P23 and P12 < P13, it means that the control valve has internal leakage, and the corresponding detection result is obtained; if P12 > P13 and P22 = P13, it means that the control valve has external leakage.

[0121] As an optional implementation manner, Figure 5 The schematic diagram of the control flow for durability detection when the detection object is a test pipeline is shown.

[0122] Set the loop count n2;

[0123] The control unit controls the second valve K4 to close, and controls the control valves K1, control valve K2, and the first valve K3 to open;

[0124] The control unit sends a control instruction to the drive unit, and the drive unit drives the piston of the cylinder assembly to increase the pressure in the air chamber;

[0125] When the air pressure is greater than the air pressure threshold, control the first valve K3 to close;

[0126] The controller reads the pressure value P14 of the sensor assembly P1;

[0127] After controlling the piston to reset, wait for a preset duration;

[0128] The controller reads the pressure value P16 of the sensor assembly P1;

[0129] Assume that (1 - a%) is the maximum allowable leakage percentage of the pipeline after a preset duration at a pressure value of P14, then the value a%P14 is the minimum allowable pressure after the preset duration.

[0130] Judge the magnitude relationship between the value a%P14 and P16. If a%P14 is greater than or equal to P16, it indicates that the test result is normal this time, and the loop count n2 = n2 + 1;

[0131] If the loop count n2 is greater than or equal to the maximum impact count Nset2, it indicates that the test result of this test process is normal, and record the loop count; if a%P14 is less than P16, it indicates that the test pipeline leaks.

[0132] During the test process, if the test pipeline is not damaged and does not leak and the loop count can reach the maximum impact count Nset2, then the durability test of the test pipeline passes; if the test pipeline leaks or is damaged, record the loop count completed before the damage occurs.

[0133] Figure 6 Show the flow schematic diagram of the pressure resistance test when the test object is the test pipeline.

[0134] The control unit controls the second valve K4 to close, and controls the control valve K1, the control valve K2, and the first valve K3 to open;

[0135] The control unit issues a control instruction to the drive unit, and the drive unit drives the piston of the cylinder assembly to pressurize the air chamber;

[0136] The control unit reads the pressure value P17 of the sensor assembly P1;

[0137] After waiting for the preset duration, read the pressure value P18 of the sensor assembly P1;

[0138] If P17 is greater than P18, it indicates that the test pipeline leaks, and the pressure resistance test ends.

[0139] During the test process, the preset duration is set to 1 s. During the pressurization process, the pressure value detected at the later time point will not be lower than the pressure value detected in the previous second. If the pressure value decreases, it indicates that the test pipeline leaks, and the pressure value collected in the previous second is the maximum pressure resistance value of the test pipeline.

[0140] Furthermore, the types of test processes include leakage detection; obtain the connection components having a connection relationship with the test object in the high-pressure hydrogen pipeline and valve detection system, and control the working states of the connection components, including:

[0141] When the type of test process is leakage detection, control the connection state of the connection components until the state value of the high-pressure hydrogen pipeline and valve detection system meets the preset conditions.

[0142] Figure 7 The figure shows a schematic flow diagram of valve leakage detection when the object to be detected is a control valve.

[0143] The control unit controls the control valve K1, the control valve K2, and the second valve K4 to close, and the first valve K3 to open;

[0144] The control unit issues a control instruction to the drive unit, and the drive unit drives the piston of the cylinder assembly to pressurize the air chamber;

[0145] When the air pressure is greater than the air pressure threshold, the first valve K3 is controlled to close;

[0146] The second valve K4 is controlled to open, and after the drive unit pulls the piston back to its original position, the second valve K4 is controlled to close;

[0147] The control unit reads the pressure value P12 of the pressure sensor P1 and the pressure value P22 of the pressure sensor P2;

[0148] After a preset time period, the controller reads the pressure value P13 of the sensor assembly P1 and the pressure value P23 of the sensor assembly P2;

[0149] Compare the pressure values of the two times before and after;

[0150] If P22 = P23, it indicates that the detection result is normal; if P22 > P23 and P12 < P13, it indicates an external leak in the connecting valve A or the connecting valve B; if P22 > P23 and P12 = P13, it indicates an internal leak in the control valve K1 or the control valve K2.

[0151] If the pressure in the test pipeline A increases and the pressure in the connecting pipeline B decreases, it indicates an internal leak in the connecting valve A or the connecting valve B; if the pressure in the test pipeline A does not change and the pressure in the connecting pipeline B decreases, it indicates an external leak in the control valve K1 or the control valve K2. If the pressures in the test pipeline A and the connecting pipeline B do not change and the time reaches the detection requirement, it indicates that there is no leakage in the control valve K1 and the control valve K2.

[0152] Furthermore, after obtaining the status value of the high-pressure hydrogen pipeline and valve detection system and determining the detection result for the object to be detected based on the comparison result between the status value and the preset status value, the method further includes:

[0153] Reset the status of the detection component and the connection component;

[0154] Obtain the current air pressure value of the high-pressure hydrogen pipeline and valve detection system;

[0155] Adjust the component status of the high-pressure hydrogen pipeline and valve detection system according to the magnitude of the current air pressure value.

[0156] Figure 8It shows a schematic flowchart for resetting a high-pressure hydrogen pipeline and valve detection system.

[0157] The control unit controls the opening of control valve K1, control valve K2, first valve K3, and second valve K4;

[0158] The control unit reads the air pressure value P10 of the sensor assembly;

[0159] If P10 is greater than or equal to 0.105 MPa, the control piston pulls to increase the air chamber volume. If P10 is less than or equal to 0.995 MPa, the control piston pushes to decrease the air chamber volume.

[0160] When P10 is between 0.995 MPa and 0.105 MPa, it indicates that the reset of the high-pressure hydrogen pipeline and valve detection system is completed.

[0161] Through the description of the above embodiments, those skilled in the art can easily understand that the example embodiments described here can be implemented by software or by a combination of software and necessary hardware. Therefore, the technical solutions according to the embodiments of the present application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (such as a CD-ROM, USB flash drive, mobile hard disk, etc.) or on the network, including several instructions to enable a computing device (such as a personal computer, server, touch terminal, or network device, etc.) to execute the method according to the embodiments of the present application.

[0162] After considering the specification and practicing the invention disclosed herein, those skilled in the art will readily conceive of other embodiments of the present application. The present application is intended to cover any variations, uses, or adaptations of the present application, which follow the general principles of the present application and include well-known common general knowledge or conventional technical means in the technical field not disclosed in the present application.

[0163] It should be understood that the present application is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present application is only limited by the appended claims.

Claims

1. A high-pressure hydrogen pipeline and valve detection system, characterized in that The high-pressure hydrogen pipeline and valve detection system includes: A detection unit, which includes multiple detection components. The high-pressure hydrogen pipeline and valve detection system is used to select one detection component or a combination of multiple detection components as the detection object for the test process according to the type of the test process. The detection components of the detection unit include a test pipeline and a control valve, and the combination of the multiple detection components is the whole formed by the combination of the test pipeline and the control valve; A control unit, which is electrically connected to the detection unit. A sensor component is arranged between the control unit and the detection unit. The sensor component is used to obtain the test parameters of the detection unit, and the control unit is used to issue control instructions and obtain the detection results of the detection unit; A driving unit, one end of which is electrically connected to the control unit. The driving unit includes a driving device and a cylinder component. The driving device is connected to the piston inside the cylinder component and is used to move the piston according to the control instructions of the control unit; The first end of the cylinder component is connected to the detection unit through a first driving part, and the second end of the cylinder component is connected to the detection unit through a second driving part; The first driving part includes a first valve and a first pipeline. One end of the first valve is connected to the cylinder component, and the other end of the first valve is connected to one end of the control valve through the first pipeline; The second driving part includes a second valve and a second pipeline. One end of the second valve is connected to the cylinder component, and the other end of the second valve is connected to the other end of the test pipeline and the control valve through the second pipeline; The first valve and the second valve are respectively connected to the air chamber outlet in the cylinder component. When the piston is pushed, the gas is squeezed to the air chamber outlet, and the gas in the cylinder flows through the detection unit through the first valve or the second valve; The types of the test process include durability detection, leakage detection, and pressure resistance detection of the test pipeline. The control unit is used for: Obtaining the connection components having a connection relationship with the detection object in the high-pressure hydrogen pipeline and valve detection system, and controlling the working state of the connection components, where the connection components include each component in the driving unit having a connection relationship with the detection object; Obtaining the state value of the high-pressure hydrogen pipeline and valve detection system, and determining the detection result for the detection object based on the comparison result between the state value and the preset state value.

2. The high-pressure hydrogen pipeline and valve detection system according to claim 1, wherein The selection of one detection component or a combination of multiple detection components as the detection object for the test process according to the type of the test process includes: When the test process is to detect the test pipeline, the test pipeline is selected as the detection object; When the test process is to detect the control valve, the control valve is selected as the detection object; When the test process is to detect the control valve and the test pipeline, the control valve and the test pipeline are combined as the detection object.

3. The high-pressure hydrogen pipeline and valve detection system according to claim 2, characterized in that The test pipeline is arranged between the control valve and the control unit, and a connection valve is arranged at the connection between the test pipeline and the control unit.

4. A detection method for a high-pressure hydrogen pipeline and valve detection system according to any one of claims 1 to 3, characterized in that, The method includes: According to the type of the test process, determining the detection object of the high-pressure hydrogen pipeline and valve detection system, where the detection object includes a control valve and a test pipeline. An inspection environment is set in the location area where the detection object is located, and the inspection environment is used to make the detection object in the temperature environment where the test process is located. The detection object is an integral formed by a single detection component or a combination of multiple detection components; Obtaining connection components in the high-pressure hydrogen pipeline and valve detection system that have a connection relationship with the detection object, and controlling the working state of the connection components; Obtaining the status value of the high-pressure hydrogen pipeline and valve detection system, and determining the detection result for the detection object based on the comparison result between the status value and the preset status value.

5. The detection method according to claim 4, wherein The step of determining the detection object of the high-pressure hydrogen pipeline and valve detection system according to the type of the test process, and setting an inspection environment in the area where the detection object is located includes: According to the type of the test process, determining the test index of the test process and the detection object targeted by the test index; Determining the location area where the detection object is located, and setting the environmental parameters of the inspection environment where the detection object is located based on the test index.

6. The detection method according to claim 4, wherein The step of obtaining connection components in the high-pressure hydrogen pipeline and valve detection system that have a connection relationship with the detection object, and controlling the working state of the connection components includes: Obtaining the connection components of the detection object in the high-pressure hydrogen pipeline and valve detection system; Determining the control operation for the connection components according to the component type of the connection components and the type of the test process.

7. The detection method according to claim 6, wherein The type of the test process includes durability detection; the step of obtaining connection components in the high-pressure hydrogen pipeline and valve detection system that have a connection relationship with the detection object, and controlling the working state of the connection components includes: When the type of the test process is durability detection, obtaining connection components in the high-pressure hydrogen pipeline and valve detection system that have a connection relationship with the detection object; Setting the number of cycles, and cyclically executing the process of controlling the working state of the connection components according to the number of cycles.

8. The detection method according to claim 6, wherein, The type of the test process includes leak detection; the step of obtaining connection components in the high-pressure hydrogen pipeline and valve detection system that have a connection relationship with the detection object, and controlling the working state of the connection components includes: When the type of the test process is leak detection, controlling the connection state of the connection components until the status value of the high-pressure hydrogen pipeline and valve detection system meets the preset conditions.

9. The detection method according to claim 4, characterized in that After obtaining the status value of the high-pressure hydrogen pipeline and valve detection system, and determining the detection result for the detection object based on the comparison result between the status value and the preset status value, the method further includes: Resetting the status of the detection components and the connection components; Obtain the current air pressure value of the high-pressure hydrogen pipeline and valve detection system; Adjust the component state of the high-pressure hydrogen pipeline and valve detection system according to the magnitude of the current air pressure value.

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